the standard
sha-········
№ 006 · the passport · court-record standard

Don’t take our word
for anything.

Every atom and node created in ARK O/S is sealed the moment it is made. The seal is a SHA-256 fingerprint of the work, recorded in a public registry.

How it works3 stages · write-once

If a single character changes,
the fingerprint breaks.This page lets you check.
No account, no permission,
no trust required.

№ 01
Captured

Whatever enters - a film, a document, a feed, a chat, an image - is recorded at its moment of entry, with its source wherever it has one. Signals arrive already named.

Nothing is laundered of where it came from.

№ 02
Sealed

Each version is fingerprinted: a SHA-256 hash of the body, sealed write-once with its date.

Edit the work and you don't overwrite the seal, you add a new one. The old fingerprints remain on the record. Every version keeps its own seal, and the lineage is public.

A seal that no longer matches its body is not an update. That is tampering, and it shows.

№ 03
Verifiable

Paste any Third ARK fingerprint or URL below. Your browser checks it against the public registry directly.

Our servers are not consulted, and need not exist.

The verifierclient-side · no account
⌜⌝⌞⌟ instrument /01 · check a seal registry · proof-manifest.json

Check any seal.

Paste a Third ARK URL or fingerprint. Your browser hashes it and checks the public registry directly. No account, no permission, no trust required.

paste a url or fingerprint
sha256: … awaiting input
The public registry cross-check ships with the first build. Until then the fingerprint is computed in your browser. The registry is already yours: proof-manifest.json →
⌜⌝⌞⌟ instrument /02 · break a seal sha-a55a

Break the Seal.

Below is a sealed specimen and its living fingerprint. Change a single character and watch the seal break.

registry entry № 001 · the sealed record
sha256: … chain unbroken

Real cryptography, computed in your browser.
The truth of the record
does not depend on our servers being up.

The certificatecertificate of sealed record · № 001
⌜⌝⌞⌟
Third ARK CHAIN UNBROKEN
Certificate of Sealed Record

The Provenance Turn

a Ready State briefing · composed in ARK O/S
Sealed2 July 2026 AD
sha-2567f3a2b91834928d4c0a1e5f6b7c8d9e0a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e
Signatureed25519:9a1f…c74b
Registry entry№ 001
Chainunbroken
Version lineage · newest first
2 Jul 2026 ADupdated · sha-7f3a…
28 Jun 2026 ADupdated · sha-4b1e…
25 Jun 2026 ADcreated · sha-0c92…
chain unbroken · verified in your browser · 31 Jul 2026 14:22 AD

This certifies the chain of custody, not the truth of the claim. It proves these sources existed, this piece came from them, and nobody has touched it since. Whether the piece is right remains the author’s burden. As it should.

Make your own work verifiable →
registry
entry № 001
write-once
public
two readings
one seal
Two readingsone seal

For Publishers.

The passport works without ARK O/S. Submit a piece and its sources. Receive a seal and a public verification page. The publisher pays. The reader checks for free.

£0.50 per passport
or £30 / month for one hundred
branded verification page · quarterly audit

An embeddable badge for Ghost and Substack footers. API documentation on release.

Join the waiting list →

For Readers.

The passport certifies the chain of provenance, not the factual accuracy of the content. It proves the sources existed, where it came from, and that nobody has touched it since.

Whether the piece is true remains the author’s burden. Their word is their reputation.

A broken chain means the content changed after sealing. Treat it accordingly. Any passported URL can be checked here, whether or not its author uses ARK O/S.

Read the manifesto →